Earthquake with magnitude of Md 2.5 on date 14-10-1997 and time 04:30:11 (Italy) in region 3 km SE Sellano (PG)

A magnitude Md 2.5 earthquake occured in region: 3 km SE Sellano (PG), on

  • 14-10-1997 02:30:11 (UTC)
  • 14-10-1997 04:30:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8760, 12.9590 at 5 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Sellano PG 3 1079 1079
Preci PG 7 724 1803
Cerreto di Spoleto PG 7 1075 2878
Visso MC 12 1107 3985
Monte Cavallo MC 14 145 4130
Vallo di Nera PG 14 364 4494
Norcia PG 14 4957 9451
Campello sul Clitunno PG 16 2442 11893
Castelsantangelo sul Nera MC 16 281 12174
Ussita MC 17 444 12618
Trevi PG 17 8469 21087
Cascia PG 18 3217 24304
Poggiodomo PG 18 117 24421
Sant'Anatolia di Narco PG 19 564 24985

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km E of Foligno (57155 inhabitants)
43 Km NE of Terni (111501 inhabitants)
53 Km E of Perugia (166134 inhabitants)
66 Km W of Teramo (54892 inhabitants)
69 Km NW of L'Aquila (69753 inhabitants)
86 Km NE of Viterbo (67173 inhabitants)
94 Km SW of Ancona (100861 inhabitants)
99 Km N of Guidonia Montecelio (88673 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
Md 2.5
ML-VAX 1.8
1997-10-14
02:30:11
42.876 12.959 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 298359
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-14 02:30:11 ± 0.121
Latitude 42.8760 ± 0.0053
Longitude 12.9590 ± 0.0167
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 298359

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 1480.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 148
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00259
Epicentral distance of station farthest from the epicenter (degree) 0.00737
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 298359
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:40:30

ML:1.8

Field Value
Value 1.8
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 298359
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ARV.Z. 1997-10-14T02:30:33.85 10.0 undecidable manual SG 358 0.6216 -0.23 0.4
--.MNS.Z. 1997-10-14T02:30:31.10 10.0 undecidable manual SG 202 0.5328 -0.05 0.6
--.FB9.Z. 1997-10-14T02:30:27.98 10.0 undecidable manual PG 350 0.8214 -0.21 0.9
--.AQU.Z. 1997-10-14T02:30:24.53 10.0 undecidable manual PG 147 0.6105 0.27 1
--.ARV.Z. 1997-10-14T02:30:24.44 10.0 undecidable manual PG 358 0.6216 0.03 1.6
--.ASS.Z. 1997-10-14T02:30:22.50 10.0 undecidable manual SG 309 0.2886 -0.08 0.4
--.MNS.Z. 1997-10-14T02:30:22.60 10.0 positive manual PG 202 0.5328 -0.12 2.8
--.ASS.Z. 1997-10-14T02:30:18.50 10.0 undecidable manual PG 309 0.2886 0.73 0.2
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download